390 



ULNAR ARTERY. 



branch communicates with the inferior profunda, the anastomotic, and, over 

 the olecranon, likewise with the interosseous recurrent. 



Fig. 274. Fig. 274. VIEW OF THE ANAS- 



TOMOSKS OP ARTERIES NEAR 

 THE ELBOW-JOINT : A, FROM 



BEFORE ; B, FROM BEHIND 



(from 11. Quain). \ 



A. a, brachialis anticus mus- 

 cle^; b. external eondyloid 

 eminence covered by the supi- 

 nator radii brevis and the anas- 

 tomoses of the superior profunda 

 and radial recurrent arteries ; 

 c, ulnar nerve ; d, median 

 nerve ; e, musculo-spiral nerve ; 

 e\ its posterior interosseous 

 branch : its radial branch is 

 cut; /, oblique line of the 

 radius ; 1, brachial artery ; 2, 

 radial artery ; 3, ulnar artery ; 

 4, inferior profunda; 5, anas- 

 tomotic ; 6, anterior ulnar re- 

 current anastomosing with the 

 anterior descending branches of 

 the anastomotic ; 7, posterior 

 ulnar recurrent passing up be- 

 hind the inner eondyloid emi- 

 nence to anastomose with the 

 inferior profunda and posterior 

 branch of the anastomotic ; 8, 

 spiral branch of the superior 

 profunda ; 9, placed on the 

 tendon of the biceps muscle, 

 points to the radial recurrent 

 artery; 10, 10, iuterosseous 

 artery and its anterior branch. 



B. a, a part of the brachialis anticus muscle : 6, external lateral ligament of the 

 elbow-joint; c, ulnar nerve; d, a small part of the musculo-spiral nerve; 1, superior 

 profunda artery ; 2, its branch to the triceps muscle ; 3, its spiral branch to the outer 

 condyle ; 4, its anastomosis with the recurrent radial artery ; 5, recurrent of the posterior 

 interosseous artery, passing up to anastomose with the preceding and with the anasto- 

 motic behind the joint ; 6, inferior profunda ; 7, posterior branch of the anastomotic 

 artery ; 8, anastomosis of the anastomotic and inferior profunda with the superior pro- 

 funda and the posterior interosseous recurrent ; 9, posterior ulnar recurrent artery pass- 

 ing up in the groove of the ulnar nerve to anastomose with the inferior profunda and 

 anastomotic. 



INTEROSSEOUS ARTERY. The interosseous or common interosseous artery, 

 the next, and the largest branch of the uluar, is a trunk of considerable size, 

 about an inch in length, which arises below the bicipital tuberosity of the 

 radius, beneath the flexor sublimis, and passes backwards to reach the upper 

 border of the interosseous ligament, where it divides into the anterior and 

 posterior interosseous arteries. 



The anterior interosseous descends upon the anterior surface of the inter- 

 osseous ligament, accompanied by the interosseous branch of the median 

 nerve and vense comites, and overlapped by the contiguous borders of the 

 flexor profundus digitorum and flexor longus pollicis muscles. It continues 

 its course directly downwards as far as the upper border of the pronator 

 quadratus muscle, then pierces the interoseeous ligament, and descends to 

 the back of the carpus. 



